VioDeRegister: Difference between revisions
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==Parameters== | ==Parameters== | ||
;rc (USHORT) - return:Return code descriptions are: | ;rc (USHORT) - return:Return code descriptions are: | ||
* 0 | *0 NO_ERROR | ||
* 404 | *404 ERROR_VIO_DEREGISTER | ||
* 430 | *430 ERROR_VIO_ILLEGAL_DURING_POPUP | ||
* 465 | *465 ERROR_VIO_DETACHED | ||
* 494 | *494 ERROR_VIO_EXTENDED_SG | ||
==Remarks== | ==Remarks== | ||
| Line 36: | Line 33: | ||
Returns WORD | Returns WORD | ||
</PRE> | </PRE> | ||
[[Category:Vio]] | [[Category:Vio]] | ||
Latest revision as of 10:39, 10 March 2020
This call deregisters a video subsystem previously registered within a session.
Syntax
VioDeRegister ()
Parameters
- rc (USHORT) - return
- Return code descriptions are:
- 0 NO_ERROR
- 404 ERROR_VIO_DEREGISTER
- 430 ERROR_VIO_ILLEGAL_DURING_POPUP
- 465 ERROR_VIO_DETACHED
- 494 ERROR_VIO_EXTENDED_SG
Remarks
VioDeRegister must be issued by the same process that issued the previous VioRegister. After VioDeRegister is issued, subsequent video calls are processed by the Base Video Subsystem.
Bindings
C
#define INCL_VIO USHORT rc = VioDeRegister(VOID); USHORT rc; /* return code */
MASM
EXTRN VioDeRegister:FAR INCL_VIO EQU 1 CALL VioDeRegister Returns WORD